Calling UBehaviorTreeComponent::StopTree from a BT node can result in a crash

UE - AI - Apr 30, 2015

This is in general not encouraged, but should not crash. The reason it's crashing is that in UBehaviorTreeComponent::Tick we process node ticks first and then try to access InstanceStack[ActiveInst ...

Crash compiling animation blueprint with Spline IK node

UE - Anim - Rigging - Dec 13, 2016

Crash occurs when compiling an animation blueprint with a Spline IK node. This seems to occur only with the Start and End Bone settings set a certain (perhaps incorrect) way. In the example given, ...

Crash when using Landscape when building lighting with commandlet

UE - Graphics Features - Jun 6, 2016

When using the new Rebuild Lighting commandlet will cause a crash with any level that builds when it has a landscape in the scene. https://github.com/EpicGames/UnrealEngine/commit/f89256dd0efb7d0b ...

Crash on draw material to rendertarget

UE - Graphics Features - May 5, 2017

This crash has started occurring in 4.15.2. It seems to be a regression from 4.15.1. ...

Having a period in the name of a widget will cause the editor to crash after copying and pasting (no error/warning given)

UE - Editor - UI Systems - Aug 3, 2015

If a user has a period in the name of their widget and they then copy and paste that widget the editor will crash ...

Crash when pasting transform in Sequencer

UE - Anim - Sequencer - Aug 21, 2017

The editor crashes when trying to copy and paste a key in sequencer if the mouse has been slightly moved. ...

Anim sequence in DLC leads to crash in IOS.

UE - Platform - Mobile - May 19, 2020

DLC download is working as expected but opening a map with anim sequence which is located at DLC's pak file will lead to crash in iOS. ...

Switching levels via blueprints crashes editor

UE - Gameplay - Feb 18, 2016

Switching levels via blueprints crashes editor. This occurs using either "Execute Console Command" or the Open Level node. Frequency: 2/2 CrashReporter: N/A ...

Crash on opening Sequence Director for Level Sequence

UE - Gameplay - Blueprint - Oct 15, 2020

Within the project attached, the Sequence Director can not be opened for the Level Sequence "SkateReel Sequencer Crash." The user reports being able to open the Sequence Director prior to copying an ...

Crash on iOS loading into a scene with Media Framework assets

Media Framework - Sep 30, 2016

Following launching a packaged Media Framework project, the application crashes. Different behavior is observed between iOS versions. When tested in 7.1.2, the video played in the scene for a few s ...